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目的:了解广州市住宿场所二次供水的卫生状况,为加强卫生管理提供科学依据和合理建议。方法:2009年-2011年对广州市部分住宿场所的二次供水水样进行采集、检测和分析。结果:2009年-2011年共检测二次供水水样128份,51份合格,总合格率为39.84%。2011年合格率(83.33%)明显高于前两年合格率(分别为25.00%、36.36%),差异有统计学意义(P<0.05)。主要不合格指标为细菌总数、耗氧量(合格率分别为53.91%、72.66%)。2009年、2010年住宿场所二次供水合格率明显低于城市管网末梢水合格率(P<0.05),2011年住宿场所二次供水和城市管网末梢水合格率差异无统计学意义(P>0.05)。结论:广州市住宿场所二次供水质量近年有所提高,但仍不够理想,需进一步加强规范建设、卫生管理和监督监测。
Objective: To understand the sanitary status of secondary water supply in residential places in Guangzhou and to provide scientific basis and reasonable suggestions for strengthening health management. Methods: From 2009 to 2011, the secondary water supply samples of some residential places in Guangzhou were collected, tested and analyzed. Results: From 2009 to 2011, a total of 128 secondary water samples were tested, 51 were qualified, with a total pass rate of 39.84%. The qualification rate in 2011 (83.33%) was significantly higher than that in the previous two years (25.00% and 36.36% respectively), with significant difference (P <0.05). The main failure indicators for the total number of bacteria, oxygen consumption (pass rates were 53.91%, 72.66%). In 2009 and 2010, the passing rate of secondary water supply for residential places was significantly lower than that of the urban pipe network (P <0.05). There was no significant difference in the qualified rates of secondary water supply between residential quarters and urban pipe network in 2011 (P > 0.05). Conclusion: The quality of secondary water supply in residential places in Guangzhou has been raised in recent years, but it is still not ideal. It is necessary to further strengthen the standard construction, health management and supervision and monitoring.